Fluid-containing cup



NOV. 12, 1929. Q 5, CRICKMER 1,735,264

FLUID CONTAINING CUP Filed March 50. 1928 2 Sheets-Sheet l I] I gwucnfozNOV. 12, 1929. c s, CRICKMER 1,735,264

FLUID CONTAINING CUP Filed March 1928 @mm m a 2 Sheets-Sheet 2 PatentedNov. 12, 1929 UNITED STATES Ij ATENT OFFICE CHARLES S. CRICKMER, OFDALLAS, TEXAS, ASSIGNOR TO THE GUIBERSON CORPORA- TION, 01 DALLAS,TEXAS, A CORPORATION OF DELAWAI RIE FLUID-CONTAINING- CUP Applicationfiled March 30, 1928. Serial No. 265,961.

This invention relates to new and useful improvements in fluidcontaining cups.

.The object of the invention is to provide a flexible cup having abushing for attaching the cup to its support and arranged to reinforcethe lower portion of the cup as well as to attach itself to the cup insuch a manner as to prevent relative displacement.

A particular object of the invention is to provide an upwardly extendingapron in-.

tegral with and offset from the body of the bushing so as to be imbeddedin the cup and to extend above the body of the bushing, thus reinforcingthe cup against lateral displace- 515 ment or bulging immediately abovesaid bushing as well as anchoring the bushing in the cup.

A construction designed to carry out the invention will be hereinafterdescribed, together with other features of the invention.

The invention will be more readily understood from-a reading of thefollowing specificationand by reference to the accompanying drawings, inwhich an example of the invention is shown and wherein:

Fig. 1 is a view of a cup constructed in accordance-with my invention, aportion being in elevation and a portion in section,

Fig. 2 is a planview of the same,

Fig. 3 is an elevation of the bushing removed from the cup,

Fig. 4 is a view partly in section and partly in elevation and showinganother form in which the invention may be carried out, and

Fig. 5 is an elevation of the bushing used in the same.

This application is a continuation in part of my former applicationSerial N 0. 195,369, filed May 31, 1927.

In the drawingsthe numeral 10 designates a flexible cup composed ofrubber, rubber compound, or any other suitable material capable of usewith the invention. The cup illustrated is of the mushroom type, such asis used with a reinforcing cage and mandrel for lifting fluids in a wellor for bleeding a well, but the invention is not limited to such a cupor shape and may be applied to any style of cup where. its use is foundadvantageous.

The cup chosen for illustration has an annular lip 11 at its upper endand is formed with a central bore or well 12. The lower portion of thecup is externally tapered, as indicated at 13, so as to offer lessresistance to a down stroke. In the outer surface of the cup areprovided spaced vertical grooves 14 terminating short of the bottom ofthe cup. Radial pockets 15 are directed inwardly at the lower end of thegrooves. R-eenforcing rods (not shown) are imbedded in the grooves andhave inturned ends seated in the said pockets. The grooves and pocketshave no connection with the invention and are merely part of theparticular cup shown.

It will be seen that the pockets, grooves and tapered lower end of thecup reduces the material or stock, and as it-is customary to attach the'cup to its support at the base of the cup, reenforcingmeans will greatlyimprove the cup and increase its efliciency. In my Letters Patent1,565,797, issued December 15, 1925, I show a cup havinga reenforcingbush ing imbedded in its lower end and this bushing has proved veryefficient in practical use. However, it has .beenfound that underextreme loads the cup is sometimes forced outwardly from the bushing andin some instances blown out or ruptured just above the top of thebushing.

In carrying out the present invention, I provide a cylindrical sleeve orcollar 16 form ing the body of the bushing. This sleeve is preferablymade of metal, or othersuitable material, and is snugly embedded in thebottom portion of the cup with its lower end substantially flush withthe bottom of said cup and its upper end terminating at the bottom ofthe well 12. At the central portion of the sleeve an upwardly directedannular apron or flange 17 is secured. The apron is connected at itsbottom to the sleeve proper by an annular boss 18, whereby the bottom ofthe apron is offset from the outer Wall of the sleeve, thus permittingthe material of the cup 10 to be received and moulded in a circum-.ferential pocket or groove 19 formed between the apron and the upperportion of the sleeve.

The apron is inclined or flared outwardly and extends some distanceabove the top edge of the sleeve and it may be reduced in thick nesstoward its upper end if desired. Spaced holes or openings 20 may beprovided in the apron for receiving the material of the cup so as tomore eflectively bond the cup and the bushing together. It will be seenthat the apron extending well above the top edge of the sleeve and beingimbedded in the annular wall of the cup, will prevent bulging andrupturing of the cup around the bottom of the well 12, therebypreventing blowouts. The apron being imbedded in the cup will alsoprevent longitudinal displacement of the sleeve as well as lateralseparation of the cup and bushing.

The bushing may be formed in any suitable manner, as by stamping,spinning, pressing, casting or machining, and is preferably moulded inthe cup, but may be inserted therein in any suitable manner. It will beseen that the upper portion of the cup is free to flex and may becompressed or expanded. The bore of the bushing being less than the boreof the well 12 permits the bushing to ,be snugly fitted on a mandrel orothersupport of less diameter than the well 12. It has been found byactual use that a cup reenforced with I the apron 17 will last longerand give better service than a cup which does not have such an apron.

The bushing is the essential feature of the invention and may be made ina number of different shapes and forms. As an illustration, I have shownin Figs. 4 and 5 a bushing having a body formed of a cylindrical sleeve16- having an outwardly directed annular flange 18 at its upper end fromwhich an annular apron 17 is extended upwardly. The apron has acircumferential lip 21 at its upper end.

This particular form of bushing readily lends itself to production byspinning or pressing. The flange 18 also forms a suitable seat-for aspacing sleeve surrounding the mandrel which is snugly received in thesleeve 16. The exact shape is not essential to the invention but itisobvious that by contracting the lip 21 the same is. more equallyspaced in the cup 10. While the invention has been shown in connectionwith a cup having grooves, it is obvious that it may be used inconnection with any type of cup wherein it is found useful andpractical.

Various changes in the size and shape of the diflerentparts, as well asmodifications and alterations, may be made within the scope of theappended claims.

What I claim, is:

1. A fluid containing cup comprising a flexible cup body provided with acentral well, and a metallic reinforcing bushing in the lower portion ofthe cup and havin a nonyielding reenforcing members rig1dly attachedthereto and projecting upwardly in the walls of the cup, whereby thewall surflexible cup body, and a reenrorcing bushing moulded in thelower portion of the cup and comprising a cylindrical sleeve and anannular apron extending upwardly from the sleeve.

4. A fluid containing cup comprising a flexible cup body, and areenforcing bushing moulded in the lower portion of the cupandrcomprising a cylindrical sleeve and an annular apron extendingupwardly from the sleeve, said apron being flared upwardly from thesleeve.

5. A fluid containing cup comprising a flexible cup body, and areentorcing bushing moulded in the lower portion of the cup andcomprising a cylindrical sleeve and an'annular apron extending upwardlyfrom the sleeve,

said apron being flared upwardly and offsetlaterally trom the sleeve.

6. A fluid containing cup comprising a flexible cup body, andareentorcing bushing comprising an annular sleeve insertedin the bottomportion of the cup and having an upwardly directed and outwardly flaredcontinuous apron integral at its lower end with the sleeve and extendinga substantial distance above the top edge of said sleeve. 7. Afluidcontaining cup comprising a flexible cup body having a well, and ametallic bushing embedded in the cup at the bottom 01" the wellcomprising a cylindrical sleeve and an upwardly flared apron integral atits lower and with the sleeve, said apron being imbedded in the wall ofthe cup and surrounding the lower portion of the well.

8. A metallic bushing for a cup comprising a cylindrical sleeve, and anupwardly directed and outwardly flared apron having its lower endintegral with the sleeve and extending a substantial distance above thetop edge of said sleeve, said apron relatively surrounding the sleeve.

9. Ametallic bushing for a flexible cup comprising, a cylindrical sleevehaving an outwardly directed annular flange at itsupper end, and anupwardly directed and outwardly flared annular apron having its loweredge integral with the flange. I

In testimony whereof I aflix my signature.

' CHARLES S. CRICKMER.

